Keyword Index - Kipp & Zonen SMP series Instruction Manual

10. Keyword index

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Term
Albedo
Azimuth angle
Angle of incidence
Cosine response
Di use horizontal irradiance
Direct normal irradiance
Global horizontal irradiance
Irradiance
Long-wave radiation
Pyranometer
Pyrgeometer
Pyrheliometer
Short-wave radiation
Thermopile
WMO
WRC
WRR
WSG
Zenith angle
Explanation
The portion of incoming radiation which is reflected by a surface
Angle in horizontal direction (0 to 360 °) normally referred to North
Incident angle from zenith (0° is vertical, 90° is horizontal)
Radiometer directional response according to the cosine law
Solar radiation, scattered by water vapour, dust and other particles as it passes through
the atmosphere falling on a horizontal surface (DHI)
Radiation that has travelled in a straight path from the sun falling on a surface normal to
the beam (DNI)
Total irradiance falling on a horizontal surface (GHI)
Global = Di use + (Direct x cos α); α is the solar zenith angle
Radiant flux density (W/m²)
Radiation with wavelengths from 4 m to more than 40 m
Radiometer for measuring short-wave global radiation
Radiometer for measuring long-wave radiation
Radiometer for measuring direct short-wave radiation
Radiation with wavelengths from approximately 300 nm to 4000 nm (4 m)
Thermal detector made up of many thermocouple junctions
World Meteorological Organisation, Geneva, Switzerland
World Radiation Centre, Davos, Switzerland
World Radiometric Reference (standard radiation scale) at WRC
World Standard Group of radiometer at WRC
Angle from zenith (0 ° is vertical)
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